My borderlands is stuttering and has a choppy framerate. I have all the drivers updated and my rig should be more than adequate to run this. here is my setup=
amd phenom 2 x6 1055T processor 2.80 GHZ
6.0G raam
64bit windows 7
geforece gtx260

yes i am usingthe current nvidia drivers, so what driver should i be using?

Give these ones a go, they improved my GTX460s performance.
On top of that, I had a similar issue that was only resolved after updating my BIOS, you may wish to check if there is a newer version available for your motherboard and update accordingly.

@seseorang
If he has the same problem I had, 640x480 at low everything would be as choppy as 1400x1050 at max everything, heh.

My borderlands is stuttering and has a choppy framerate. I have all the drivers updated and my rig should be more than adequate to run this. here is my setup=
amd phenom 2 x6 1055T processor 2.80 GHZ
6.0G raam
64bit windows 7
geforece gtx260

Please, if anyone can help, it would make me really happy. THANKS!

Try to disable dynamic shadows. I could run this on max settings without it 1440x900 resolution with 60fps but enabling dynamic shadows gives huge fps drops. Check that you aren't forcing AA,Af from gpu.

Also DON'T UPDATE YOUR BIOS IF THERES NOTHING ON THE UPDATE NOTES WHICH SHOULD HELP YOU. You should be fine on without dynamic shadows o everything else max and 1600x resolution.

This game is all about shadows, and without it Borderlands doesnt look good.

yes but they are a MASSIVE framerate killer in spots even on my E8500 and gtx260. in fact Claptrap DLC was so choppy in spots that I just gave up and turned it off. and most people dont realize its actually the cpu that plays a huge role in running dynamic shadows. in the spots that make me plummet to 30-35fps, I can lower my res from 1920 to 1280 and the framerate is exactly the same. also if I put my cpu at 2.0 the game is super sluggish in those spots where lots of dynamic shadows are present. turning off dynamic shadows makes it perfectly playable though.

Also DON'T UPDATE YOUR BIOS IF THERES NOTHING ON THE UPDATE NOTES WHICH SHOULD HELP YOU.

It's often the unstated changes which make the most difference. There was no "made GTX460s not suck" on my latest update notes but the results speak for themselves. BIOS updates are only a bad idea when:
1) You're using the wrong (or corrupted) bios image
2) You have a dodgy/unstable power supply (either PSU or external issue)
3) There are reported issues from other users upgrading to the same bios image
or
4) You run it from within Windows

My borderlands is stuttering and has a choppy framerate. I have all the drivers updated and my rig should be more than adequate to run this. here is my setup=
amd phenom 2 x6 1055T processor 2.80 GHZ
6.0G raam
64bit windows 7
geforece gtx260

Please, if anyone can help, it would make me really happy. THANKS!

I know this thread is old, but the problem still exists. The GPU isn't the problem. I'm using an AMD Radeon HD 5850 GPU with an AMD Phenom II X6 1055T CPU. Does the game's coding just suck or what? It's a relatively new game, and we're all using hardware from around the time the game was released, right? Obviously not everyone has this problem, or it would have been fixed long ago. It's most likely true that Dynamic Shadows are messing up our game. What do we all have in common? I'm also using a 64-bit version of Windows 7. Maybe that's the problem...